<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script>
    document.write("\u52ff\u65bd\u4e8e\u4eba");
    alert('\u52ff\u65bd\u4e8e\u4eba');
</script>
</body>
</html>